Final answer:
After further exposure to dark and light, test tube 2 will likely remain yellow due to no environmental change, while test tube 3 may change to blue upon exposure to light, leading to option B (Test tube 2: Yellow, Test tube 3: Blue) as the predicted outcome.
Step-by-step explanation:
To predict the color change in test tube 2 and test tube 3 after being treated differently, we need to infer from the provided information and the typical behaviors of chemical reactions in response to light. Since there is no specific information about the chemical nature of the solutions, we can make a general prediction based on common photosensitive reactions.
After 24 hours in the dark, both test tubes turned yellow, indicating that darkness perhaps promotes the yellow color, likely due to the formation of a yellow precipitate or some other reaction pathway that does not require light. When test tube 3 is placed in a sunny window, it is exposed to light which may cause a photochemical reaction leading to a change in color. Meanwhile, test tube 2 will remain in the dark, so we expect it to stay yellow since no new environmental change has been introduced to affect it.
Considering that light can drive photosensitive reactions and possibly reverse the formation of the yellow precipitate or cause a new reaction that changes the color, we predict that after the next 24 hours, test tube 2 will remain yellow, while test tube 3 may change color due to exposure to sunlight. Thus, a reasonable prediction would be:
- Test tube 2: Yellow
- Test tube 3: Blue (assuming light exposure could reverse the dark-induced yellow color)
Therefore, option B (Test tube 2: Yellow, Test tube 3: Blue) is the predicted outcome.